LOWELL, Mass. (AP) — Kaleigh Fratkin scored with 80 seconds remaining and Boston clinched a berth in the postseason with a 4-3 victory over Montreal after blowing all of a three-goal third-period lead in a Professional Women’s Hockey League regular-season finale at the Tsongas Center on Saturday.

Fratkin’s winner, her second goal of the season, came with assists from Jessica Digirolamo and Susanna Tapani, and gave Boston the lead just 1:49 after a goal by Montreal’s Marie-Philip Poulin evened the score.

Boston (8-4-3-9) needed a victory in regulation to qualify for the playoffs and keep Minnesota from clinching a spot. Minnesota ended the season on a five-match losing streak, all while needing just one point to qualify for the postseason in the league’s inaugural campaign.

Boston took a 1-0 lead with 4:41 left in the first period when Hilary Knight scored for a sixth time this season. Hannah Brandt and Kelly Babstock had assists. It was Babstock’s first helper of the season.